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The Wall Street Crash in 1929 caused huge economic problems for Germany. With millions unemployed, German citizens lost faith in the Weimar Government. Hitler was able to exploit this by promising to rebu...

This can be done by taking moments. To reduce the number of equations a moment should  be taken so that one of the forces goes through the centre of place from which moments are being taken. We will choos...

Original energy: GPE=509.81m KE=0 Final energy: GPE=0 KE=(1/2)mv² Therefore (1/2)mv² = 50m9.81 . The m cancels and simplifying the equation we are left with v^2...

2,4,8,16,32 The series is multiplying by two every time.

The external intercostal muscles contract which moves the diapraghm upwards. This reduces the volume of the thorax and therefore with less space, the pressure in the lungs goes up. The pressure in the lun...